.loading {
    width: 70px;
    height: 70px;
    background-color: #fff;
    border-radius: 50%;
    display: block;
    animation: scaleout_action 1.0s infinite ease-in-out;
}


@keyframes scaleout_action {
    0% {
        transform: scale(0);
    }

    100% {
        transform: scale(1);
        opacity: 0;
    }
}